Make camos ontop of guns

Hello guys, just wanted to make this tutorial, because it is how I made a couple of good shotgun mods.
I'm assuming that everyone knows the basics of Texture modding, if not, then looks at the stickies.

I made this as noob friendly as I could please thank if you liked or used .

Editing the width of the camo is not necessary, as all the in game camos pattern flawlessly. It may be necessary if you wish to edit how big the camo will look, but for the most part it is not totally necessary.